In this article Frank explains the code used in the Wii Nunchuck Mouse article. Each piece of the code is explained clearly. If you want to understand how the Wii Nunchuck Mouse works or learn about programming then this is a good article to read.
Coverage includes the Arduino microcontroller code and the Autoit scripts […]

I did some more scrounging to create a mini Locnar using the LEDs from a Glade Light Show air freshener. The wall wart had previously been scrounged from this air freshener for the bread board power supply. Now we reuse part of the circuit board with the LEDs combined with what we learned in […]

In this article I describe the simple setup and explain the code to drive analog meters using PWM outputs from an Arduino and the LCD Smartie program. I also replace the meter face to show the proper scale. Replacing the meter scale is very easy to do with most meters and can really add some […]

In this article Randall Bohn converts the Liberlab microcontroller project software so that the Arduino platform can take advantage of the great Liberlab software and experiment platform. We mentioned Liberlab here at uChobby in a recent article.
Liberlab is an excellent lab tool for learning about analog and digital control. With a programmed microcontroller and the […]

DAC is short for Digital to Analog Converter. In this article we play around the code Michael Smith created for a PWM based DAC. I modified his code so that other DAC options could be tried. I compare the 8-Bit PWM DAC with the R2R DAC at various numbers of bits. You might be surprised […]

Michael Smith just posted up a great project where he uses PWM to play back sampled sound on the Arduino. His code is posted up at the Arduino Playground here.
Michael hijacked two timers, one for PWM generation and the other for the playback sample rate. His sample rate is 8KHz and the PWM runs at […]

Often when working on microcontroller projects you need a background function to run at regular intervals. This is often done by setting up a hardware timer to generate an interrupt. The interrupt triggers an Interrupt Service Routine (ISR) to handle the periodic interrupt. In this article I describe setting up the 8-Bit Timer2 to generate […]

This is the third in a series of articles about generating sound with an Arduino. In this article we bit-bang our way through Jingle Bells . It’s almost Christmas so why not make a festive microcontroller project?
If your not up to speed on making sound with the Arduino read the first two articles in this […]

Randall converted an Arduino into AVR chip programming hardware for use with AVRDude. The project programs AVR tiny13 and other tiny AVR chips using an Arduino. He provides code and instructions to implement the Atmel AVR910 In System Programming protocol.
This article was submitted by Randall Bohn as part of the “Hobby parts for articles” program. […]

Oscar Gonzales has done some neat things with the Arduino, this time he has a Persistence Of Vision (POV) project featuring the Arduino. He has a very well done video showing the details of construction and demonstrating operation. One really neat feature he has included is an IR trigger to keep the LED flashes necessary […]